Several hypotheses propose that cooperative breeding leads to increased cognitive
performance, in both nonhuman and human primates, but systematic evidence for such a …

Comparative psychology assesses cognitive abilities and capacities of non-human animals
and humans. Based on performance differences and similarities in various species in …

When published in 1980, Benjamin B. Beck's Animal Tool Behavior was the first volume to
catalog and analyze the complete literature on tool use and manufacture in non-human …

Newly hatched domestic chicks were reared with five identical objects. On days 3 or 4,
chicks underwent free-choice tests in which sets of three and two of the five original objects …

When making choices between risky options, human decision-makers exhibit a number of
framing effects. One of the most prominent framing effects is the tendency for decision …

The insight that animals' cognitive abilities are linked to their evolutionary history, and hence
their ecology, provides the framework for the comparative approach. Despite primates …

Animal metacognition is an active, growing research area, and one part of metacognition is
flexible information-seeking behavior. In Roberts et al.(2009), pigeons failed an intuitive …

We investigated whether jungle crows can select a given quantity of items (printouts of
shapes and symbols) when simultaneously presented with smaller or larger quantities. We …

Both human and non-human animals often face decisions between options available at
different times, and the capacity of delaying gratification has usually been considered one of …

As humans, several non-human animal species avoid risk, defined as “variability in rate of
gain”. However, non-human primate studies revealed a more complicated picture, with …